Pocket seal press



c. PRlEsMx-:YER 2,203,644

PUCKET SEAL PRESS Filed Dec. 4, 1939 Ill/I y Il..

lll/Illu Patented June 4, 1940 PATENT oFFTcE POCKET SEAL PRESS Charles Priesmeyer, Park Ridge, Ill., assgnorto i Gustav A. J. Meyer, Chicago,` Ill.

Refiled for abandoned application` Serial No.

199,675, April 2, 1938. This application December 4, 1939, Serial No. 307,384

This application is a refling o f my application No, 199,675, led April 2, :1938. i

My invention relates to improvements inpocket type seal presses (such as that shown in my Patent No. 2,077,853 of April 20, 1937) in which the `upper die can be depressed `by moving a lever in whichV a roller is journaled, and in which this upper die is supportedand normally raised by an `approximately horizontal spring part.

In such a seal press it has heretoforebeen customary toiprovide the 'upper die with a oy, lindrical riser stem extending upwards through a i perforation in this spring part;` also, to employ a cap fitted tightly over the: upwardly projecting part of this riser and `seated, on the spring for supporting the die, upon the top of which cap the i roller travels during the depressing of the lever.

In general, `the objects of my invention comprisetheproviding of simple and inexpensive Pfl` means forovercoming the following shortcomings of the above `recited customary assembly of i the forward portion of the spring with the upper die and the cap-like pressure-transmitting member.

`(l) When the riser stem` and the corresponding perforation in the spring are both of circular section, the assembler has to `be careful lil when there are markings on `both the die and i i ly fitting the saidriser stem, is then forced down over` thatstem, this operation in itself is apt 4to i rotate the stem somewhat, so that each of the ,f 4 0 just recited assembly steps may cause an undesirably skewed impression of the seal.

(2) Whenever the just recited inaccuracy oci curs, the cap-like shoe, which must seaton the spring for rigidly clamping the upper die to the 45 i, spring, has to be pried upwardly somewhat away fromthe spring before `that die can be rotated to correct the error. i This in itself meansa careful operation, and a further. rotational shifting is apt to occur later on when the cap-like `shoe `50 `is `,again pressed downward to seat it on the.

,i spring.

,y (3,) To insure `a rigid supporting of thefupper lai-de` by a capgthusl pressed over the riser stem of zithat die, `itnis also necessary `tohave thatstem il,55;project.to `the considerable height required for l thickness of the cap top (which should be imperforate to` avoid causing undue wear on the roller) further adds to the space which must 5 be provided between `the top of the `spring and` the roller. Consequently, thel height of the frame of the press must be correspondingly large, therebyl preventing the press from having the cornpactness desired for a pocket appliance. i 10 (4) InV making an impression of a notarial seal on documents itis usuallydesirableto have the impressed lettering `upright on` the document. However, diiferentclasseslof documents vary as tothe edge of `the sheet near which a space for such `an impression'is providedwhich space may be adjacent to the top, bottom, or" either side of the sheet. Consequently,` when a notary l who mainly certifies only a certain class of documents orders a seal press, he must specify near which of the four edges -of the sheet theimpression `is to be made,so that the seal press manufacturer in each case can mount the dies according to the specifying order, namely in a certa-in one of four rotationally different positions onl the press, (5) Moreover, `when the stem-gripping cap has the usual cylindrical exterior which can be most economically manufactured, this cap` presents a circular top, so that a roller corresponding `in length to the diameter` ofthat top will only bear 3() for its entire` length on this top during a small portion of its travel; thereby causing uneven wear. 1 i i v i `Illustrative of the simple and inexpensive mannerin which my present invention alleviates all 3'5 'of the above diiliculties,

shoe, namely along the line 2-2 of Fig. l.

, Fig. 3 is an enlargedsection taken along the line 3-,3 of Fig. 2` through the lower die, the forward portion ofthe spring, and the shoe.

Fig. 4 `is a plan View `showing the assembly of the lower die with the forward portion of the spring, before the 'sheis placed in operative 55 Fig. 'l is a bottom view of the shoe, showing the recess into which the upper end of the riser .on

the upper die can project freely. Fig. 8 is a plan view ofthe forwardportion o the spring alone, showingthesquare perforation for interchangeably receiving the riser stem of ,f

the upper die in any one of the usual four rotationally different positions,and also the auxiliary perforations for receiving the 'depending' fingers on the shoe.

Fig. 9 is a section allied lto Fig. l, but showing the heretofore customary assemblages of a spring withV alower die and shoe, for comparison with my here presented construction.

In carrying out my present invention, I provide the forward part of thespring with a perforation disposed so as to be coaxial'vwith the lower die L-when the upper die U and the spring are depressed, but make this vperforation P an accurate square having two opposite sides parallel to the medial longitudinal and vertical plane of the* frame F of thepress and the spring S,

namely parallelto the plane along which the section of Fig. 1 was taken.

Next, I make the axial riser R'onr the upper die U of a square section slidably fitting the bore r yof -thesaid perforation P and only slightly taller than the lthickness `ofthe atspring strip S, so

`that the upper end of this riser will project only to a trivial extent above ythe spring-when this riser hasbeen, slid upwards through the said perforation to have thel spring Vseat on the top of the upper die. With such a trivial height of the upwardly projecting riser part, a few vlight taps .needed height Iof the frame.

von'the upper end of the riserA with a peening down over a tall cylindrical riser R according n Y l invention or from the appended claims.

4interengaging formations for'denitelypositiorl hammer will readily expand the upper edge portion of the riser to vwedge the riser in Vthe vsaid perforation for vfirmly supporting the upper die with two sides ofthe riser parallel to and equally spaced from the said vertical plane of the press.-

"frame Then, instead of employing apresser-distributing'shoe in the 4form of a cap C driven tightly tothe previouspraetice (as illustrated in Fig. 9) I use La shoe I detachably seated on the spring and out of all contact with my square-sectioned riser, and provide this shoe and the spring with ing the' shoe.

' Thus, Figs. 3, 6 and 7 show a suitable shoe in =the form of ai generallywflat andwrectangularpunching,desirably of. steel, `which punching has i ngers F'projecting and dependingfrom opposite `endsof itsmain rectangular part.

two auxiliary perforations 2, disposed at,oppo

site ,sides of.theaforesaidsquare. perforation P f and formed for`v slidably, receiving and. intery above the spring,A a spring having the said porlocking respectively .with the said fingers.

. Since ther-interior, spread ofthe lever 3 which ,carriesthe pressure exertingroller 4 (Fig. l) is usually narrow, I..prefe r,ably space the said auxiliary. perforations -of the spring longitudinally of -the.press. This .enables me `to make the main .or rectangular part. .of, the shoeof a. width equal To co-o-perate iwith-theseingers.Iprovide the spring with closely approximating the interior width of the usual (inverted U-sectioned) lever, so that the' roller can bear for its entire length on this shoe at all times.

Moreover, I provide the shoe I with a central bottom recess 8 ofgreater area than the crosssection ofthe riser R on,l the., upper die, and of and 7,1 the main rectangular part of the shoe ,has a flatframe-like lower face, corresponding in spread to the top of shoe, for distributing the vdownward pressure fromr the roller 4 of the press over a similarly large area of the spring, namely an area much larger than that afforded by the lheretofore employed cap-shaped type of shoe.

Since the square perforation P in the spring yreadily can be punched accurately as to itssize and shape, and the riser' Ri'ronvgthe `upper die also can speedily be shaped accurately by a simple millingmachine operation, my present, construction permits a -speedy and accurate as Y sembling of the. spring and fthe'die; with the latter in any one of the usual four alternative *rotational positions. "Moreovergif another die is to be substituted, orif the die in an assembled press is to be positioned,"the press manufacturer (or any fair mechanic employedby a distributor) can speedily release the rsaid riser from the spring by slight lateral taps on the peened stem portions after the shoe has been lifted off the spring.

By v employing my abovev recited accurately t--;

ting and definitely positionedl square-sectioned provisions, I 'also reliminate theheretofcre unavoidableextra -time required forpaccurately pc- 1 sitioning the upper die. Moreover; `I rreduce the Y cost of the press because `of the cheapness of my vspeedily punched shoe in proportion to an accurately bored cap,in addition to reducing the However, while I have heretofore described my invention in` connection with an embodiment in which `the' shoe is definitely vpositioned by providing itwithfingers depending into correspondingly `formed perforations inthe'spring, it isv to be understood that'this embodiment is-.merely illustrative, sincemany changes might loe-made -both as to the shoe-positioning and otherwise,

without departing either from the spirit of-my g Forfexample, if the dies `are to be used for embossing an ornamentV which mightv present a changed appearanceI inf different positions, Aboth the riser yofthe upper die and the perforation in the spring might be of a different polygonal and normally horizontal'springportion and in",

which thedie isforced downwardby a depressing movement of a roller lwhich is movably supported tion providedl with'la square perforation cio-axial with the die, the die `having a square riser stem extending upwardly into and wedged in tthe said perforation; and a-generally flat pressure transmittingshoe provided Lv'vith a'bottoin recess and haying'a flatzframe-.like bottoml pOrtioneXt'ending around thesaid recess and "seated Non theiu Cil spring; the recess being of larger area than the said perforation and freely housing any portion of the said riser stem which extends above the spring, the shoe being detachably interlocked with portions of the spring to prevent a horizontal shifting of the shoe with respect to the spring.

2. In a seal press, an assemblage of a spring with the upper die of the press and with a shoe, as per claim 1, in which the said square perforation has two opposite sides disposed parallelto thelongitudinal axis of the spring; in which the spring hasa plurality of formations, near to but spaced fromthe said square perforation, which formations engage portions of the shoe to afford the said detachable interlocking.

3. In a seal press, an assemblage of a spring with the upper die of the press and with a shoe, as per claim 2, in which the said square perforation has two opposite sides disposed parallel to the longitudinal axis of the spring; in which the spring has a plurality of formations, near to but spaced from the said square perforation, which formations engage portions of the shoe to afford the said detachable interlocking; the shoe being rectangular, disposed with its longer axis in a vertical plane along the longitudinal axis of the spring, and provided at each end of the shoe with a finger; and the spring having two formations respectively in engagement with the said fingers for alfording the said interlocking.

4, In a seal press of the class in which a lower die is rigidly supported by a body member, and

in which the impression is effected by movement i of a lever which is pivoted in the body member,

a spring fastened to the body member and having a at and approximately horizontal movable spring portion extending above and acrosslthe axis of the lower die, the said spring having a perforation co-axial with the said die axis; an upper die underlying the said spring portion and having a 'riser stem firmly socketed in the said perforation, a shoe seated upon and detachably interlocked with the said spring portion and freely overlying the said riser stem, and a roller journaled on the lever on a horizontal axis parallel to the pivot axis of the lever; the shoe having a nat top parallel to the topof the said spring portion, the roller being `continuously in downward engagement with the said shoe.

5. A seal press of the class in which an actuating lever is pivoted to an upper portion of the frame of the press for movement in the longitudinal vertical medial plane of the press, in which a roller is journaled in the leveron an axis parallel` to the lever pivoting axis and projects downwardly below adjacent portions of the lever, inwhich a fiat and approximately horizontal portion of a spring extends below the said roller, and in which the upper die of the press underlies and is supported by the said spring portion; the seal press being characterized by i having the upper die portion include a riser stem of rectangular section slidably iitted` into and extending through a correspondingly shaped perforation in thesaid spring portion, by having at least the upper part of the said stem expanded to wedge the stem lin that perforation; and by including a shoe extending freely above the upper end of the riser stem and having a flat upper face continually engaged by the roller, the shoe having portions thereof seated on the said spring part and presenting an upper face of considerably greater spread than the said perforation and parallel to the upper face of the said spring portion.

6. A seallpress in which a lever-carried roller travels on a shoe which overlies both the central portion of the upper die of the press and a vertically movable flat spring part disposed between the said die and shoe, characterized by having the die include a central and square-sectional riser stem extending upwardly through and fitting a similarly sectioned perforation in the said spring part, the portion of the riser stem housed by the said perforation being radially expanded for wedging it firmly in the said perforation; the seal press being also characterized by includinga shoe which has a portion thereof freely overlying the top of the said riser stem and has other shoe portions seated on the said spring portion; and which shoe presents a flat roller-engaging top parallel to the upper face of the said spring part. i

7. A seal press of the type in which the upper die underlies and is supported by a iiat and approximately horizontal spring portionV in which the die` is depressib-le by the downward thrust of a portion of a lever which has its vertical longitudinal plane of movement along the axis of the said die, and in which the thrust of the ysaid lever part is transmitted tothe spring through an interposed shoe; characterized by having the upper die include a riser stem of rectangular section, by having the-said riser stern extending at least substantially through a perforation of counterpart section formed in the said spring portion and presenting two opposite sides parallel to the said vertical plane, the said stem being expanded into the perforation so as to serve as the sole means for supporting the said upper die from the said spring portion; and also characterized by having the shoe seated upon the said spring portion and `latched against movement flatwise of the spring, and by having the central portion of the shoe freely spaced from the upper portion of the said riser stern.

8. In a seal press in which the upper die underlies a spring portion which is depressible by movement of a lever and in which the die has its axis disposed in the medial longitudinal plane of the said lever, a die-supporting spring having its forward portion provided with an equal angled perforation having two opposite sides disposed parallel to and equally spaced from the said plane, the said die having an axial riser of counterpart section to the `said perforation extending upwards into and expanded into the said perforation; a shoe having its central portion freely overlying the said riser and having a frame-like bottom portion seated on the spring; and a roller journaled in the lever on an `axis transverse of the said plane and projecting below adjacent parts of the lever, `the said shoe having a flat upper face portion parallel to the upper face of the spring and continually in upward engagement with the roller.

CHARLES Pl'lESlVlEYElE-t` 

